Two-stroke multistage supercharging cylinder
阅读说明:本技术 一种两行程多级增压气缸 (Two-stroke multistage supercharging cylinder ) 是由 彭长长 章良文 向亮 邓宁 于 2019-10-18 设计创作,主要内容包括:本发明涉及一种两行程多级增压气缸。该气缸包括活塞杆和依次通过端盖连接在一起的前缸体、中间缸体和后缸体,活塞杆包括前杆、套管和连杆;前缸体内设置有前活塞,中间缸体内设置有中间活塞,后缸体内设置有后活塞。本发明所提供的两行程多级增压气缸在动作时,首先是中间缸体中的中间活塞前进,推动套管向前移动,进而带动前杆向前移动完成第一行程,前杆完成第一行程的同时,套管通过可分离的连接机构与连杆连接在一起,此时,前缸体和后缸体中进气,前活塞和后活塞向前移动,同时带动前杆、套管和连杆向前移动完成第二行程,本发明所提供的两行程多级增压气缸可同时实现两个行程的动作及增压效果,满足汽车白车身焊装使用。(The invention relates to a two-stroke multistage supercharging cylinder. The air cylinder comprises a piston rod, a front cylinder body, a middle cylinder body and a rear cylinder body which are sequentially connected together through end covers, wherein the piston rod comprises a front rod, a sleeve and a connecting rod; a front piston is arranged in the front cylinder body, a middle piston is arranged in the middle cylinder body, and a rear piston is arranged in the rear cylinder body. When the two-stroke multistage supercharging cylinder provided by the invention acts, firstly, the middle piston in the middle cylinder body advances to push the sleeve to move forwards, so as to drive the front rod to move forwards to complete a first stroke, and the sleeve is connected with the connecting rod through the separable connecting mechanism while the front rod completes the first stroke.)
1. A two-stroke multi-stage supercharging cylinder is characterized by comprising a piston rod, a front cylinder body (1), a middle cylinder body (2) and a rear cylinder body (3) which are sequentially connected together through an end cover (9), wherein the piston rod comprises a front rod (4), a sleeve (5) and a connecting rod (6);
a front piston (10) is arranged in the front cylinder body (1), a middle piston (11) is arranged in the middle cylinder body (2), and a rear piston (12) is arranged in the rear cylinder body (3);
the front rod (4) is positioned in the front cylinder body (1) and penetrates out of the front end cover of the front cylinder body (1), the sleeve (5) is positioned in the middle cylinder body (2) and penetrates through the tail part of the end cover and the front rod (4) to be connected together, the front piston (10) is fixedly arranged on the front rod (4), the connecting rod (6) penetrates through the front end cover of the rear cylinder body (3) and extends into the sleeve (5), the connecting rod (6) and the sleeve (5) are connected together through a separable connecting mechanism, the separable connecting mechanism is in a separated state when the piston rod moves in a first stroke, the separable connecting mechanism is in a connected state when the piston rod moves in a second stroke, the middle piston (11) is sleeved on the connecting rod (6) and can move relative to the connecting rod (6), the middle piston (11) is positioned at the rear end of the sleeve (5) to push the sleeve (5) to move forwards, the rear piston (12) is fixed on the connecting rod (6);
and the front cylinder body (1), the middle cylinder body (2) and the rear cylinder body (3) are all provided with an air inlet and an air outlet.
2. The two-stroke multistage supercharging cylinder according to claim 1, characterized in that the separable connecting mechanism comprises a fixing hole (71) provided on the sleeve (5), a marble (72) provided in the fixing hole (71), a clamping groove (73) provided on the connecting rod (6), and a marble pressing device (8), the sleeve (5) drives the marble (72) to move under the action of the intermediate piston (11), and when the sleeve (5) finishes the first stroke, the marble (72) enters the clamping groove (73) and is pressed by the marble pressing device (8); when the sleeve (5) returns to start a second stroke, the marble pressing device (8) releases the marble, and the marble (72) is driven by the sleeve (5) to be separated from the clamping groove (73).
3. A two-stroke multistage supercharging cylinder according to claim 2, characterized in that the fixing hole (71) has a cylindrical structure on the inside and a spherical structure on the outside, the fixing hole (71) is in clearance fit with the ball (72) and the opening diameter of the upper end of the spherical structure is less than the diameter of the ball (72).
4. A two-stroke, multistage supercharge cylinder according to claim 3, characterized in that the height of the fixing hole is 1/2 marble (72) diameter, and the height of the cylindrical structure is equal to the sleeve thickness equal to 1/4 marble (72) diameter.
5. A two-stroke multistage supercharging cylinder according to claim 2, characterized in that the connecting rod (6) comprises a first body with a larger diameter at the front end and a second body with a smaller diameter at the rear end, between which a clamping groove (73) is formed.
6. A two-stroke, multistage supercharging cylinder according to claim 2, characterized in that the intermediate cylinder (2) comprises a first intermediate cylinder (21) and a second intermediate cylinder (22) which are connected together by an end cover (9); marble closing device (8) are located middle cylinder body (21), middle piston (11) are located middle cylinder body two (22), marble closing device (8) are including piston even cover (81), the piston is even set (81) cover and is established on sleeve pipe (5) and the front end that the piston even set (81) was passed through spring (83) and supports on the end cover, the afterbody that the piston even set (81) is provided with inclined plane (84), the piston is even forms a sealed chamber (85) between afterbody outside and end cover (9) of cover (81), and when aerifing wherein, spring (83) are compressed.
7. The two-stroke multistage supercharging cylinder according to claim 1, characterized in that the connecting rod (6) is a hollow structure, a through hole (131) is formed at the joint of the sleeve (5) and the front rod (4), the tail of the connecting rod (6) extends out of the rear piston (12), and gas in the front cylinder body (1) can enter the rear cylinder body (3) through the sleeve (5) and the connecting rod (4) to push the rear piston (12) to move forward.
8. The two-stroke multi-stage supercharging cylinder according to claim 7, wherein the sleeve (5) is connected with the front rod (4) through a front shaft (13), the front shaft (13) comprises a small solid head and a large hollow head, the small solid head is provided with an external thread, the front rod (4) is fixed on the small solid head through a thread, the large hollow head is provided with an external thread, the sleeve (5) is fixed on the large hollow head through a thread, and the through hole (131) is formed at the connection position of the small solid head and the large hollow head.
9. The two-stroke multistage supercharging cylinder according to claim 7, further comprising a rear shaft (14), wherein the rear shaft (14) is of a hollow structure, the rear shaft (14) comprises a body of a hollow cylindrical structure, an outward flange is provided at the tail of the body of the cylindrical structure, the connecting rod (6) is mounted on the rear shaft (14) through a thread, the rear piston (12) is mounted on the rear shaft (14), and the end of the rear piston is located at the rear side of the rear piston (12).
10. A two-stroke multistage supercharging cylinder according to claim 1, characterized in that a plurality of supercharging cylinders are further provided between the intermediate cylinder body (2) and the rear cylinder body (3), a piston is provided in each of the plurality of supercharging cylinders, the connecting rod (6) passes through each of the plurality of supercharging cylinders in sequence, and the piston is fixed to the connecting rod (6).
Technical Field
The invention relates to the technical field of cylinders, in particular to a two-stroke multistage supercharging cylinder.
Background
The spot welding for automobile welding needs a cylinder with a large opening and a small opening, so that a welding tongs can freely enter and exit a gap between a welding clamping device and an automobile part in the large opening, and the welding can be stably carried out in the small opening. The cylinder needs to provide a time gap for the change of the opening of the welding tongs in the action process, meanwhile, the frequency of spot welding of the welding tongs is ensured, and the production cost is reduced, so that the two-stroke multi-stage supercharging cylinder is especially important.
Disclosure of Invention
The invention provides a two-stroke multistage supercharging cylinder aiming at the technical problems in the prior art, which can stop when a first stroke is completed, provides a time gap for a welding tongs to be opened into a large opening and can ensure high-frequency spot welding operation when the welding tongs are opened into a small opening.
The technical scheme for solving the technical problems is as follows: a two-stroke multistage supercharging cylinder comprises a piston rod, a front cylinder body, a middle cylinder body and a rear cylinder body which are sequentially connected together through end covers, wherein the piston rod comprises a front rod, a sleeve and a connecting rod; a front piston is arranged in the front cylinder body, a middle piston is arranged in the middle cylinder body, and a rear piston is arranged in the rear cylinder body; the front rod is positioned in the front cylinder body and penetrates out of a front end cover of the front cylinder body, the sleeve is positioned in the middle cylinder body and penetrates through the end cover to be connected with the tail of the front rod, the front piston is fixedly arranged on the front rod, the connecting rod penetrates through the front end cover of the rear cylinder body and extends into the sleeve, the connecting rod is connected with the sleeve through a separable connecting mechanism, the separable connecting mechanism is in a separated state when the piston rod moves in a first stroke, the separable connecting mechanism is in a connected state when the piston rod moves in a second stroke, the middle piston is sleeved on the connecting rod and can move relative to the connecting rod, the middle piston is positioned at the rear end of the sleeve and pushes the sleeve to move forwards, and the rear piston is fixed on the connecting rod; and the front cylinder body, the middle cylinder body and the rear cylinder body are all provided with an air inlet and an air outlet.
The invention has the beneficial effects that: when the two-stroke multistage supercharging cylinder provided by the invention acts, firstly, the middle piston in the middle cylinder body advances to push the sleeve to move forwards, so as to drive the front rod to move forwards to complete a first stroke, and the sleeve is connected with the connecting rod through the separable connecting mechanism while the front rod completes the first stroke.
Preferably, the separable connecting mechanism comprises a fixing hole arranged on the sleeve, a marble arranged in the fixing hole, a clamping groove arranged on the connecting rod and a marble pressing device, the sleeve drives the marble to move under the action of the middle piston, and when the sleeve finishes a first stroke, the marble enters the clamping groove and is pressed by the marble pressing device; when the sleeve returns to start the second stroke, the marble pressing device loosens the marble, and the marble is separated from the clamping groove under the driving of the sleeve.
Preferably, the inside of fixed orifices is cylindrical structure, and the outside is spherical structure, fixed orifices and marble clearance fit and the opening diameter of spherical structure upper end < the diameter of marble.
Preferably, the height of the fixing hole is 1/2 marble diameter, and the height of the cylindrical structure is equal to the sleeve thickness equal to 1/4 marble diameter.
Preferably, the connecting rod comprises a first body with a larger front end diameter and a second body with a smaller tail end diameter, and a clamping groove is formed between the first body and the second body.
Specifically, the intermediate cylinder body comprises an intermediate cylinder body I and an intermediate cylinder body II which are connected together through an end cover; the marble closing device is located in the middle of the cylinder body I, the middle piston is located in the middle of the cylinder body II, the marble closing device comprises a piston connecting sleeve, the piston connecting sleeve is arranged on the sleeve, the front end of the piston connecting sleeve is abutted to the end cover through a spring, the tail of the piston connecting sleeve is provided with an inclined plane, a sealed cavity is formed between the outer portion of the tail of the piston connecting sleeve and the end cover, and when the marble closing device is inflated into the sealed cavity, the spring is compressed.
Preferably, the connecting rod is of a hollow structure, a through hole is formed in the joint of the sleeve and the front rod, the tail of the connecting rod extends out of the rear piston, and gas in the front cylinder body can enter the rear cylinder body through the sleeve and the connecting rod to push the rear piston to move forwards.
Preferably, the sleeve is connected with the front rod through a front shaft, the front shaft comprises a solid small head and a hollow large head, an external thread is arranged on the solid small head, the front rod is fixed on the solid small head through a thread, an external thread is arranged on the hollow large head, the sleeve is fixed on the hollow large head through a thread, and the through hole is formed in the connection position of the solid small head and the hollow large head.
Preferably, still include the rear axle, the rear axle is hollow structure, the rear axle includes the body of hollow cylinder structure, the body afterbody of cylinder structure is provided with outside flange, and the connecting rod passes through the screw thread and installs on the rear axle, the back piston is installed on the rear axle, and the rear axle tip is located the rear side of back piston.
The front rod, the sleeve and the connecting rod are mounted through the front shaft and the rear shaft, and the mounting and the dismounting are convenient.
Preferably, still be provided with a plurality of pressure boost cylinder bodies between middle cylinder body and the back cylinder body, all be provided with the piston in a plurality of pressure boost cylinders, the connecting rod passes each pressure boost cylinder body in proper order, the piston is fixed on the connecting rod. A plurality of pistons are connected in series on the connecting rod in a series connection mode, the number of pressurizing pistons during working is increased, and therefore working thrust of the cylinder is increased.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic illustration of an explosive structure according to the present invention;
FIG. 4 is a schematic structural view of the front axle;
FIG. 5 is a schematic structural view of the cylinder in an initial state;
FIG. 6 is a schematic view of the cylinder extending a first stroke;
FIG. 7 is a schematic view of the cylinder extending a second stroke;
FIG. 8 is a schematic view of the cylinder retracting a second stroke;
FIG. 9 is a schematic view of the cylinder retracting a first stroke;
FIG. 10 is a schematic view of the air intake structure of the piston connecting sleeve part;
FIG. 11 is a schematic view of the structure of the tail of the cylinder when two pistons are connected in series;
in the drawings, the components represented by the respective reference numerals are listed below:
the marble pressing device comprises a front cylinder body 1, a
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1-3, a two-stroke multistage supercharging cylinder comprises a piston rod, a front cylinder body 1, a
When the two-stroke multistage supercharging cylinder provided by the embodiment acts, firstly, the middle piston 11 in the
As shown in fig. 2 and 3, the separable connecting mechanism includes a fixing hole 71 disposed on the sleeve 5, a ball 72 disposed in the fixing hole 71, a slot 73 disposed on the connecting rod 6, and a ball pressing device 8, the sleeve 5 drives the ball 72 to move under the action of the intermediate piston, and when the sleeve 5 has finished a first stroke, the ball 72 enters the slot 73 and is pressed by the ball pressing device 8; when the sleeve 5 returns to start the second stroke, the marble pressing device 8 releases the marble 72, and the marble 72 is driven by the sleeve 5 to be separated from the clamping groove 73, so that the sleeve 5 and the connecting rod 6 are separated. The fixing holes 71 may be circumferentially distributed in plural numbers, for example, 6.
Specifically, the inner side of the fixing hole 71 is a cylindrical structure, the outer side of the fixing hole is a spherical structure, the fixing hole 71 is in clearance fit with the marble 72, and the opening diameter of the upper end of the spherical structure is smaller than the diameter of the marble 72. The purpose of this arrangement is to ensure that the ball 72 neither can escape from the fixing hole 71 in the casing 5, nor can it emerge from the upper end of the fixing hole 71 to push the ball presser 8.
More specifically, we set the height of the fixing hole 71 to 1/2, the diameter of the marble 72, the height of the cylindrical structure equal to the thickness of the sleeve 5 equal to the height of the spherical structure equal to 1/4, the diameter of the marble 72.
In this embodiment, the connecting rod 6 includes a first body with a larger diameter at the front end and a second body with a smaller diameter at the rear end, and the diameters of the first body and the second body form a slot 73. More specifically, the depth of the clamping groove 73 can be set to be equal to the diameter of 1/4 of the marble 72, or the surface of the clamping groove 73, which is tightly attached to the second body, is set to be an inclined surface, that is, the second body and the first body are in smooth transition, so that the marble 72 can be smoothly taken out by the sleeve 5 and enter between the fixing hole 71 of the sleeve 5 and the connecting rod 6 without being pressed by the marble pressing device 8, and meanwhile, the marble 72 cannot continuously extrude the
As shown in fig. 2, the
In this embodiment, we further set up connecting rod 6 for hollow structure, through-
Specifically, as shown in fig. 2-4, the sleeve 5 is connected with the front rod 4 through the front shaft 13, the front shaft 13 includes a solid small head and a hollow large head, the solid small head is provided with an external thread, the front rod 4 is fixed on the solid small head through a thread, the hollow large head is provided with an external thread, the sleeve 5 is fixed on the hollow large head through a thread, the through
As shown in fig. 4, the two-stroke multistage supercharging cylinder further comprises a rear shaft 14, the rear shaft 14 is of a hollow structure, the rear shaft 14 comprises a body of a hollow cylindrical structure, an outward flange is arranged at the tail of the body of the cylindrical structure, the connecting rod 6 is mounted on the rear shaft 14 through threads, the rear piston 12 is mounted on the rear shaft 14, and the end of the rear shaft 14 is located at the rear side of the rear piston 12. The front rod 4, the sleeve 5 and the connecting rod are mounted through the front shaft 13 and the rear shaft 14, and the mounting and the dismounting are convenient.
In this embodiment, as shown in fig. 11, a plurality of pressure cylinder bodies may be disposed between the
The specific working principle and process of the invention are as follows:
when the cylinder is in an initial state: as shown in fig. 5, the piston is in an ejecting state under the elastic force of the
The cylinder extends for a first stroke: as shown in fig. 6, A, B ports are charged, C, D, E, F ports are discharged, that is, the
The cylinder extends for a second stroke: as shown in fig. 7, the G port is filled and the B, C port is exhausted, that is, the front end of the front cylinder 1 is exhausted through the C port and the front end of the
Retracting the cylinder for a second stroke: as shown in fig. 8, A, B ports are filled with air, C, D, E, F ports are exhausted with air, namely, the rear end of the
Cylinder retract first stroke: as shown in fig. 9, the C, B, H inlet air, the B inlet air presses the rear piston on the rear end cover, the
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
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